/****************************************************************************
 *
 *   Copyright (c) 2017,2018 Eike Mansfeld ecm@gmx.de. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 * 3. Neither the name of the copyright holder nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 ****************************************************************************/


package com.comino.flight.ui.widgets.charts.utils;

import java.util.Enumeration;
import java.util.Hashtable;

import com.comino.flight.observables.StateProperties;

import javafx.scene.chart.XYChart;

public class XYDataPool {

//	private static final int INIT_CAPACITY = 20000;
//
//	private final static Hashtable<XYChart.Data<Number,Number>,Boolean> locked = new Hashtable<XYChart.Data<Number,Number>,Boolean>(0);
//	private final static Hashtable<XYChart.Data<Number,Number>,Boolean> unlocked = new Hashtable<XYChart.Data<Number,Number>,Boolean>(INIT_CAPACITY);
//
	public XYDataPool() {
//		StateProperties.getInstance().getLogLoadedProperty().addListener((a,o,n) -> {
//			if(n.booleanValue() && locked.size() > 0) {
//				invalidateAll();
//			}
//		});
//		
//		XYChart.Data<Number,Number> o;
//		for(int i=0;i<unlocked.size();i++) {
//			o = new XYChart.Data<Number,Number>(0,0);
//			unlocked.put( o, true );
//		}
	}

	public  XYChart.Data<Number,Number> checkOut(double x, double y)
	{
		XYChart.Data<Number,Number> o;
//		if( unlocked.size() > 0 )
//		{
//			Enumeration<XYChart.Data<Number,Number>> e = unlocked.keys();
//			o = e.nextElement();
//			o.setXValue(x);
//			if(!Double.isNaN(y))
//				o.setYValue(y);
//			else
//				o.setYValue(0);
//			unlocked.remove(o);
//			locked.put(o, true);
//			return(o);
//		}
		if(!Double.isNaN(y)) {
			o = new XYChart.Data<Number,Number>(x,y);
//			locked.put( o, true );
			return o;
		}

		o = new XYChart.Data<Number,Number>(x,0);
//		locked.put( o, true );
		return o;

	}

	public void invalidate(XYChart.Data<Number,Number> o) {
//		if(locked.size()>0) {
//			locked.remove(o);
//			unlocked.put(o, true);
//		}
	}

	public  void invalidateAll() {
//		unlocked.clear();
//		unlocked.putAll(locked);
//		locked.clear();
	}

	public int getLockedSize() {
//		return locked.size();
		return 0;
	}

}
